321a3c244d
It has been included since af5f434f8c0fb3b4ee3b206ebc1946ca660a8abe for deprecation reasons, but removing it has been forgotten after it had served is purpose. So remove it. For convenience, include version.h instead as LIBAVUTIL_VERSION_INT is supposed to be used when creating AVClasses. Reviewed-by: Martin Storsjö <martin@martin.st> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
120 lines
3.4 KiB
C
120 lines
3.4 KiB
C
/*
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* Copyright (c) 2012 Nicolas George
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public License
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* as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with FFmpeg; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <string.h>
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#include "libavutil/avstring.h"
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#include "libavutil/avutil.h"
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#include "libavutil/base64.h"
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#include "url.h"
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typedef struct {
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const uint8_t *data;
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void *tofree;
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size_t size;
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size_t pos;
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} DataContext;
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static av_cold int data_open(URLContext *h, const char *uri, int flags)
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{
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DataContext *dc = h->priv_data;
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const char *data, *opt, *next;
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char *ddata;
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int ret, base64 = 0;
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size_t in_size;
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/* data:content/type[;base64],payload */
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av_strstart(uri, "data:", &uri);
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data = strchr(uri, ',');
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if (!data) {
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av_log(h, AV_LOG_ERROR, "No ',' delimiter in URI\n");
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return AVERROR(EINVAL);
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}
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opt = uri;
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while (opt < data) {
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next = av_x_if_null(memchr(opt, ';', data - opt), data);
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if (opt == uri) {
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if (!memchr(opt, '/', next - opt)) { /* basic validity check */
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av_log(h, AV_LOG_ERROR, "Invalid content-type '%.*s'\n",
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(int)(next - opt), opt);
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return AVERROR(EINVAL);
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}
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av_log(h, AV_LOG_VERBOSE, "Content-type: %.*s\n",
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(int)(next - opt), opt);
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} else {
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if (!av_strncasecmp(opt, "base64", next - opt)) {
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base64 = 1;
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} else {
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av_log(h, AV_LOG_VERBOSE, "Ignoring option '%.*s'\n",
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(int)(next - opt), opt);
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}
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}
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opt = next + 1;
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}
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data++;
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in_size = strlen(data);
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if (base64) {
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size_t out_size = 3 * (in_size / 4) + 1;
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if (out_size > INT_MAX || !(ddata = av_malloc(out_size)))
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return AVERROR(ENOMEM);
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if ((ret = av_base64_decode(ddata, data, out_size)) < 0) {
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av_free(ddata);
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av_log(h, AV_LOG_ERROR, "Invalid base64 in URI\n");
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return ret;
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}
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dc->data = dc->tofree = ddata;
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dc->size = ret;
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} else {
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dc->data = data;
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dc->size = in_size;
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}
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return 0;
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}
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static av_cold int data_close(URLContext *h)
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{
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DataContext *dc = h->priv_data;
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av_freep(&dc->tofree);
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return 0;
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}
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static int data_read(URLContext *h, unsigned char *buf, int size)
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{
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DataContext *dc = h->priv_data;
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if (dc->pos >= dc->size)
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return AVERROR_EOF;
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size = FFMIN(size, dc->size - dc->pos);
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memcpy(buf, dc->data + dc->pos, size);
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dc->pos += size;
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return size;
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}
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const URLProtocol ff_data_protocol = {
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.name = "data",
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.url_open = data_open,
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.url_close = data_close,
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.url_read = data_read,
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.priv_data_size = sizeof(DataContext),
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};
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